=+5.11. The conclusion in Problem 5.10 was that the median difference (BeforeAfter)

was positive for the affected age group, but this does not imply that the reduction was the result of laws that raised the minimum legal drinking age. Other factors, Table 1 Data for Problem 5.10 State Affected ages Ratio before Ratio after Florida 18 0.262 0.202 Georgia 18 0.295 0.227 Illinois 19–20 0.216 0.191 Iowa 18 0.287 0.209 Maine 18–19 0.277 0.299 Michigan 18–20 0.223 0.151 Montana 18 0.512 0.471 Nebraska 19 0.237 0.151 New Hampshire 18–19 0.348 0.336 Tennessee 18 0.342 0.307